According to the signature 4x65w PC
fixture which should be plenty IMO
if this is the same tank the anemone is in.
Just for the sake of clarity, when a coral/anemone "bleaches" the zooxanthallae do not die off they are expelled by the coral/anemone but indeed lack of light (and thus lack of food) is a very common cause of this.
A pic is very important. My first concern was that you described it as a "pink" BTA, which normally the only colored variety other than the standard green is a red/maroon hue.